Wow! I never knew I had a desire for a situation in which "pragmatically infelicitous" would be an appropriate utterance, but now that you're written it, I'm consumed with envy!! (Or at least admiration!)

Actually, it's just a technical term used in pragmatics - the study of the use of language within particular social situations.

Example: "You may leave now," said the peasant to the king.

The social and situational relationships are totally wrong for this sentence to make sense.

Other cases:

Speaking to a child sitting at the table, eating: "Come to the table and eat right this minute!" Speaking to someone smoking: "Have that cigarette!" Speaking to someone who has just beaten you up: "Thank you!"

Such usages are called "infelicitous". Linguists have been able to list many conditions which must apply for a sentence to make pragmatic sense within a given social or situational context. The technical term for these conditions is "felicity conditions".

Linguists have been able to list many conditions which must apply for a sentence to make pragmatic sense within a given social or situational context. The technical term for these conditions is "felicity conditions".

Well, many felicitations to you then. Your knowledge of linguistics is so cool! I only scratched the surface with a couple survey classes as an undergraduate. Sometimes I wish I had a giant "do over" coupon that I could cash in and go back and really study it.